Mar 27, 2025 · Asterisk is a free and open source framework for building communications applications and is sponsored by Sangoma.

Asterisk is an open source framework for building communications applications. Asterisk turns an ordinary computer into a communications server. Asterisk powers IP PBX systems, VoIP gateways, conference servers and other custom solutions.

Feb 6, 2010 · Download the currently supported versions of Asterisk and various Asterisk-related open source projects.

Asterisk, the world’s most popular open source communications project, is free, open source software that converts an ordinary computer into a feature-rich voice communications server. Asterisk makes it simple to create and deploy a wide range of telephony applications and services, including IP PBXs, VoIP gateways, call center ACDs and IVR ...

FreePBX is a web-based open source GUI (graphical user interface) that controls and manages Asterisk (PBX), an open source communication server. FreePBX is licensed under the GNU General Public License (GPL), an open source license.

Most Asterisk-based systems and solutions require additional components: IP-phones, VoIP gateways or telephony interface cards, and other hardware. Companies that deploy open source solutions frequently need training and often prefer to have support from a trusted partner.

Examples of these are FreePBX, which is also an open source project, its hosted commercial version PBXact Cloud, and other business phone systems offered as managed services.

The Asterisk Community is made up of more than 86,000 registered users, developers and advocates who have contributed their time and effort to make Asterisk the world’s most widely adopted open source communications project.

Asterisk is a fully Open Source, hybrid TDM and packet voice PBX and IVR platform. Asterisk is and has been Open Source under GNU GPL (with an exception permitted for linking with the OpenH323 project, in order to provide H.323 support).

Asterisk is an open source framework for building communications applications. Asterisk powers IP PBX systems, IVR systems or virtually any other kind of communication app.